Ma Hong-Zhi, Luo Chen, Zhao Jiang-Nan, Shao Yan, Zhang Yu-Hao, Liu Xu, Li Shuang, Yin Bo, Zhang Kai, Ke Kai, Zhou Ling, Yang Ming-Bo
College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065 Sichuan, China.
ACS Appl Mater Interfaces. 2023 Aug 9;15(31):37563-37570. doi: 10.1021/acsami.3c07966. Epub 2023 Jul 27.
Triboelectric nanogenerators have shown great potential in the area of self-powered gas sensors in the past decade. In this paper, we developed a triboelectric nanogenerator (TENG) based on spiky structured ZIF-8@ZnO, which can harvest energy with high efficiency and act as a self-powered methanol sensor. The open-circuit voltage and short-circuit current generated by a ZIF-8@ZnO-based TENG is 58 V and 10 μA, achieving 2.4 times and 3.3 times enhancement compared to ZnO-based TENGs. The TENG can charge capacitors fast and light up at least 40 LEDs. ZIF-8@ZnO-based TENGs show good sensitivity and selectivity to methanol gas at room temperature due to the porous structure provided by ZIF-8 and the heterostructure of ZIF-8@ZnO. The response of ZIF-8@ZnO-based TENG to methanol reaches 30.35% at 100 ppm with excellent response (∼5.9 s) and recovery time (∼2.2 s). This work demonstrates the application of MOF-modified metal oxide semiconductors based on a self-powered gas sensor and proposes a promising solution to enhance the output performance and sensing properties of TENGs based on metal oxide semiconductors.
在过去十年中，摩擦电纳米发电机在自供电气体传感器领域展现出了巨大潜力。在本文中，我们开发了一种基于尖刺结构ZIF-8@ZnO的摩擦电纳米发电机（TENG），它能够高效收集能量并作为自供电甲醇传感器。基于ZIF-8@ZnO的TENG产生的开路电压和短路电流分别为58 V和10 μA，与基于ZnO的TENG相比，分别提高了2.4倍和3.3倍。该TENG能够快速为电容器充电，并至少点亮40个发光二极管。由于ZIF-8提供的多孔结构以及ZIF-8@ZnO的异质结构，基于ZIF-8@ZnO的TENG在室温下对甲醇气体表现出良好的灵敏度和选择性。基于ZIF-8@ZnO的TENG对100 ppm甲醇的响应达到30.35%，具有出色的响应时间（约5.9 s）和恢复时间（约2.2 s）。这项工作展示了基于自供电气体传感器的金属有机框架修饰金属氧化物半导体的应用，并提出了一种增强基于金属氧化物半导体的TENG输出性能和传感特性的有前景的解决方案。
